UIImage, NSAttributedStringのテスト方法

はじめに

FBSnapshotTestCaseを拡張してUIImage, NSAttributedStringの検証を行う方法です。

extension FBSnapshotTestCase {

UIImageを検証するメソッド

func FBSnapshotVerifyImage(_ image: UIImage, identifier: String = "", suffixes: NSOrderedSet = FBSnapshotTestCaseDefaultSuffixes(), tolerance: CGFloat = 0, file: StaticString = #file, line: UInt = #line) {
    FBSnapshotVerifyView(UIImageView(image: image), identifier: identifier, suffixes: suffixes, tolerance: tolerance, file: file, line: line)
}

NSAttributedStringを検証するメソッド

func FBSnapshotVerifyAttributedString(_ string: NSAttributedString, identifier: String = "", suffixes: NSOrderedSet = FBSnapshotTestCaseDefaultSuffixes(), tolerance: CGFloat = 0, file: StaticString = #file, line: UInt = #line) {
    let label = UILabel()
    label.attributedText = string
    label.numberOfLines = 0
    label.sizeToFit()
    FBSnapshotVerifyView(label, identifier: identifier, suffixes: suffixes, tolerance: tolerance, file: file, line: line)
}

検証方法

    FBSnapshotVerifyImage(UIImage(named:"hogehoge"))

    let string = NSMutableAttributedString(string: "あいう")
    ....
    FBSnapshotVerifyAttributedString(string)